#1B7183#1B7183

#1B7183 is a mid, moderate cyan. Relative luminance 0.137; OKLCH L 50.8% C 0.082 H 215.5°. Best body text is #FFFFFF at 5.62:1 contrast (WCAG AA passes).

Color values

HEX	#1B7183
RGB	rgb(27, 113, 131)
HSL	hsl(190, 66%, 31%)
HSV	hsv(190, 79%, 51%)
CMYK	cmyk(79.4%, 13.7%, 0%, 48.6%)
CIE-LAB	lab(43.77, -18.09, -17.01)
CIE-LCH	lch(43.77, 24.83, 223.24°)
OKLab	oklab(50.81% -0.0666 -0.0475)
OKLCH	oklch(50.81% 0.082 215.5)
XYZ	xyz(10.4521, 13.6807, 23.5581)
Luminance	0.1368 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B7183 #832D1B

analogous

#1B8361 #1B7183 #1B3D83

triadic

#1B7183 #831B71 #71831B

tetradic

#1B7183 #611B83 #832D1B #3D831B

square

#1B7183 #611B83 #832D1B #3D831B

split-complementary

#1B7183 #831B3D #83611B

monochromatic

#06191E #114550 #1B7183 #259DB6 #41BED8

Accessibility & contrast

On white

5.62

#1B7183 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.74

#1B7183 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1B7183

5.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B7183	#FFFFFF	#000000	##FFFFFF
##1B7183	1.00	5.62	3.74	5.62
#FFFFFF	5.62	1.00	21.00	1.00
#000000	3.74	21.00	1.00	21.00
##FFFFFF	5.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#656D84

Deuteranopia (green-blind)

#576383

Tritanopia (blue-blind)

#007877

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #1b7183;
/* rgb */ color: rgb(27, 113, 131);
/* oklch */ color: oklch(50.8% 0.082 215.5);

Tailwind

colors: {
  custom: {
    50: '#6a9aa7',
    500: '#1b7183',
    950: '#000000',
  },
}

SCSS

$custom: #1b7183;
$custom-light: #6a9aa7;
$custom-dark: #000000;

JSON

{
  "hex": "#1b7183",
  "rgb": {
    "r": 27,
    "g": 113,
    "b": 131
  },
  "hsl": {
    "h": 190.385,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.50807,
    "c": 0.08183,
    "h": 215.5
  },
  "luminance": 0.13682
}

Semantic roles & 50–950 ramp

primary

#1B7183

secondary

#B65743

accent

#5C3FE9

background

#F6F9FA

surface

#ECF2F4

border

#C7CCCE

text

#070E0F

muted

#7A7E7F

Preview Lab

Preview with #1B7183

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →